package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVO;
import com.atguigu.gulimall.product.vo.AttrResponceVO;
import com.atguigu.gulimall.product.vo.AttrVO;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {
    @Autowired
    AttrAttrgroupRelationDao attrAttrgroupRelationDao;
    @Autowired
    AttrGroupDao attrGroupDao;
    @Autowired
    CategoryDao categoryDao;
    @Autowired
    CategoryService categoryService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }
    @Transactional
    @Override
    public void saveAttr(AttrVO attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        //1.保存基本数据
        this.save(attrEntity);
        //2.保存关联关系
        if(attr.getAttrType()== ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()&&attr.getAttrGroupId()!=null){
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity=new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrId(attrEntity.getAttrId());
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());
            attrAttrgroupRelationDao.insert(attrAttrgroupRelationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> attrEntityQueryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        if(catelogId!=0){
            attrEntityQueryWrapper.eq("catelog_id",catelogId);
        }

        String key= (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            attrEntityQueryWrapper.and((obj)->{
                obj.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                attrEntityQueryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrVO> attrVOList = records.stream().map((record) -> {
            AttrResponceVO attrResponceVO = new AttrResponceVO();
            BeanUtils.copyProperties(record, attrResponceVO);
            //设置分类和分组的名字
            if("base".equalsIgnoreCase(type)){
                AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", record.getAttrId()));
                if(attrAttrgroupRelationEntity!=null&&attrAttrgroupRelationEntity.getAttrGroupId()!=null){
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrAttrgroupRelationEntity.getAttrGroupId());
                    attrResponceVO.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }

            CategoryEntity categoryEntity = categoryDao.selectById(record.getCatelogId());
            if(categoryEntity!=null){
                attrResponceVO.setCatelogName(categoryEntity.getName());
            }
            return attrResponceVO;
        }).collect(Collectors.toList());
        pageUtils.setList(attrVOList);
        return pageUtils;
    }

    @Cacheable(value = "attr",key = "'attrInfo:'+#root.args[0]")
    @Override
    public AttrResponceVO getAttrInfo(Long attrId) {
        AttrEntity attrEntity = this.getById(attrId);
        AttrResponceVO attrResponceVO = new AttrResponceVO();
        BeanUtils.copyProperties(attrEntity,attrResponceVO);
        if(attrEntity.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            //1.设置分组信息
            AttrAttrgroupRelationEntity relationEntity = attrAttrgroupRelationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if(relationEntity!=null){
                Long attrGroupId = relationEntity.getAttrGroupId();
                attrResponceVO.setAttrGroupId(attrGroupId);
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrGroupId);
                if(attrGroupEntity!=null){
                    attrResponceVO.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }

        //设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        attrResponceVO.setCatelogPath(categoryService.findCatelogPath(catelogId));

        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if(categoryEntity!=null){
            attrResponceVO.setCatelogName(categoryEntity.getName());
        }

        return attrResponceVO;
    }
    @Transactional
    @Override
    public void updateAttr(AttrResponceVO attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.updateById(attrEntity);
        if(attrEntity.getAttrType()==ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()){
            //1.修改分组关联
            AttrAttrgroupRelationEntity relationEntity=new AttrAttrgroupRelationEntity();
            relationEntity.setAttrId(attr.getAttrId());
            relationEntity.setAttrGroupId(attr.getAttrGroupId());

            Integer attr_id = attrAttrgroupRelationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));

            if(attr_id>0){
                attrAttrgroupRelationDao.update(relationEntity,new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",attr.getAttrId()));
            }else{
                attrAttrgroupRelationDao.insert(relationEntity);
            }
        }

    }

    /**
     * 根据分组id查看关联的基本属性
     * @param attrGroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrGroupId) {
        List<AttrAttrgroupRelationEntity> entities = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrGroupId));
        List<Long> attrIds = entities.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        if(attrIds==null||attrIds.size()==0){
            return null;
        }
        List<AttrEntity> list = this.listByIds(attrIds);
        return list;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVO[] vos) {
//        attrAttrgroupRelationDao.delete(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id",1L).eq("attr_group_id",1L));
        List<AttrAttrgroupRelationEntity> relationEntities = Arrays.asList(vos).stream().map((item) -> {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item,attrAttrgroupRelationEntity);
            return attrAttrgroupRelationEntity;
        }).collect(Collectors.toList());
        attrAttrgroupRelationDao.deleteBatchRelation(relationEntities);
    }

    /**
     * 获取当前分组没有关联的所有属性
     *
     * @param params
     * @param attrGroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrGroupId) {
        //1、当前分组只能关联自己所属的分类里面的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrGroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2、当前分组只能关联别的分组没有引用的属性
        //2.1)、当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());

        //2.2)、这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3)、从当前分类的所有属性中移除这些属性；
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(attrIds!=null && attrIds.size()>0){
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);

        PageUtils pageUtils = new PageUtils(page);
        System.out.println(pageUtils.getList().size());
        return pageUtils;
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return this.baseMapper.selectSearchAttrIds(attrIds);
    }



}